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OMAP2,3: DSS2: Build omap_device for each DSS HWIP

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Looks up the hwmod database for each of the given DSS HW IP and builds
omap_device which inturn does the platform device register for each of DSS HW IP

Signed-off-by: Senthilvadivu Guruswamy <svadivu@ti.com>
Signed-off-by: Sumit Semwal <sumit.semwal@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Senthilvadivu Guruswamy 2011-01-24 06:21:56 +00:00 committed by Tomi Valkeinen
parent 8ba775ca0d
commit cf07f53162
2 changed files with 57 additions and 0 deletions
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52
arch/arm/mach-omap2/display.c
View File

@ -23,6 +23,8 @@
#include <linux/err.h>
#include <plat/display.h>
#include <plat/omap_hwmod.h>
#include <plat/omap_device.h>
static struct platform_device omap_display_device = {
.name = "omapdss",
@ -32,9 +34,59 @@ static struct platform_device omap_display_device = {
},
};
static struct omap_device_pm_latency omap_dss_latency[] = {
[0] = {
.deactivate_func = omap_device_idle_hwmods,
.activate_func = omap_device_enable_hwmods,
.flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST,
},
};
int __init omap_display_init(struct omap_dss_board_info *board_data)
{
int r = 0;
struct omap_hwmod *oh;
struct omap_device *od;
int i;
struct omap_display_platform_data pdata;
/*
* omap: valid DSS hwmod names
* omap2,3: dss_core, dss_dispc, dss_rfbi, dss_venc
* omap3: dss_dsi1
*/
char *oh_name[] = { "dss_core", "dss_dispc", "dss_rfbi", "dss_venc",
"dss_dsi1" };
char *dev_name[] = { "omapdss_dss", "omapdss_dispc", "omapdss_rfbi",
"omapdss_venc", "omapdss_dsi1" };
int oh_count;
memset(&pdata, 0, sizeof(pdata));
if (cpu_is_omap24xx())
oh_count = ARRAY_SIZE(oh_name) - 1;
/* last hwmod dev in oh_name is not available for omap2 */
else
oh_count = ARRAY_SIZE(oh_name);
pdata.board_data = board_data;
pdata.board_data->get_last_off_on_transaction_id = NULL;
for (i = 0; i < oh_count; i++) {
oh = omap_hwmod_lookup(oh_name[i]);
if (!oh) {
pr_err("Could not look up %s\n", oh_name[i]);
return -ENODEV;
}
od = omap_device_build(dev_name[i], -1, oh, &pdata,
sizeof(struct omap_display_platform_data),
omap_dss_latency,
ARRAY_SIZE(omap_dss_latency), 0);
if (WARN((IS_ERR(od)), "Could not build omap_device for %s\n",
oh_name[i]))
return -ENODEV;
}
omap_display_device.dev.platform_data = board_data;
r = platform_device_register(&omap_display_device);

5
arch/arm/plat-omap/include/plat/display.h
View File

@ -237,6 +237,11 @@ static inline int omap_display_init(struct omap_dss_board_info *board_data)
}
#endif
struct omap_display_platform_data {
struct omap_dss_board_info *board_data;
/* TODO: Additional members to be added when PM is considered */
};
struct omap_video_timings {
/* Unit: pixels */
u16 x_res;